Figure 5From: Effects of abscisic acid and brassinolide on photosynthetic characteristics of Leymus chinensis from Songnen Plain grassland in Northeast China Changes in F v /F m ; F v /F o and F m /F o of L. chinensis under ABA and BR treaments (F v /F m : maximum quantum yield of PSII photochemistry; F v /F o : potential activityof PSII; F m /F o : electronic transfer efficiency of PSII) . Back to article page